- #1

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- Homework Statement
- Please see below

- Relevant Equations
- Limit

L'Hopital Rule is not allowed

I know $$\lim_{h\rightarrow 0} af(h)+bf(2h)−f(0)=0$$

$$a+b=1$$

But I don't know how to find the second equation involving a and b. I imagine I need to somehow obtain ##h## in numerator so I can cross out with ##h## in denominator but I don't have idea how to get ##h## in the numerator.

Thanks